Harmonic radar using multiple receivers and angle of arrival positioning technique for environment with obstacles

A harmonic radar system can easily locate transponders. However, the use of conventional harmonic radar systems is limited in environments with many obstacles such as a forest. To solve this problem, this paper proposes a harmonic radar system that can avoid obstacles in environments using multiple low-cost receivers and transmitters. Experimental results show that this system can determine the location of a transponder even in a forest full of obstacles.